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rocky66

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About rocky66

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    Lightly Roasted

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  1. Thanks Dave got the job now done. For my education does the setting of the OPV in any way influence the extraction or is it purely a safety mechanism. Sorry if it sounds a stupid question but I Am forever trying to learn more.
  2. Dave Thank you for the link. The only thing I am not sure is do I tighten the OPV it if the pressure is not been relieved at 12 bar and loosen it if the OPV lets go earlier? To summarise I switch on the machine. Let it reach working temp Fit a blind filter and activate the brew lever Turn the pressure brew regulating valve clockwise till it shows 12 bar If the OPV lets go before 12 bar then I loosen the OPV and conversely if at 12 if it has not opened then I tighten the OPV? Finally adjust the brew regulator valve down to 9bar Does the above seem right?
  3. Hi, I recently plumbed in my duetto after many good years service via the reservoir. I fitted a pressure regulator with the pressure just under 3 bar ( within manufacturer spec). As soon as I opened up the water it began to pour out via the OPV outlet above the drip tray. It eventually stopped when the machine warmed up but then started to flow out when it cooled down. I decided to remove the spring and plunger from the OPV ( with a struggle) and noticed debris making it stick. The end of the plunger and o ring were in very good codition for a six year old machine. I cleaned everything wi
  4. Thank u very much it all now makes sense. As I use steam and counted 14 drops my bypass setting is 2
  5. Hi I have a BWT test kit> i understand that you have to put 1 drop at a time till it changes colour. How does this relate to the setting requires on the BWT head? Ie if it takes 6 drops what bypass setting should be used? 10 drops? How do you work it out please
  6. Hi I have an izzo alex duetto and today the steam knob failed and came off. The knob seems to comprise of a washer ( not shown) a spring and a half moon metal washer. I have worked out that the half moon washer fits on the outside of the knob around the spigot which pokes through the hole ( copper part of knob) as you turn the knob and spring on inside. What is happening is the half moon washer is being forced as the knob is rotated out and it comes off. What can I do? Is the washer loose and if so where can I get another please
  7. Hi, I Thought it would be useful to post a complete set of pictures here. I have owned an Alex izzo 3 for about 4 years and have used only brita filtered water all the time. About a year ago I replaced the temperature probe on the brew boiler which made me realise that I could access the inside of the boiler that way. In time I purchased a waterproof endoscope for around £20 and pushed it into the brew boiler and took photos. I was amazed at how scaled up it looked. I decided to descale by mixing 50 grammes of citric acid to around a litre of water. After dissolving the crystals in a little wa
  8. a little citic acid and clean as a whistle
  9. I have dropped a probe with a camera to look at the element before descaling. You can clearly see calcium deposits on the element. I will descale it in next few days and hopefully show it improved.
  10. rocky66

    Hi

    Hi to all, I have read your forums with interest and have decided to contribute myself. I have gone from nespresso to gaggia to izzy alex duetto 3 and niche zero. A coffee nut with many good and bad experiences in the black arts of coffee extraction. I have learnt much but always eager to learn more.
  11. Hi, I purchased a duetto about 5 years ago and have never descaled it. Except for changing the temperature probe once it has had no faults. I have decided to descale it and have undone the nut over the brew boiler to initially syringe out the water. To my surprise it was a milky cloudy colour. It has never come out anything but clear on the brewhead. I replaced the water with a little clear cold tap water just to see if it would come out cloudy. A minute later I syringed it out and it was cloudy but less so than the first time. Why is happening? I can only assume that it must be picking up s
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